package com.xu.blog_after_end.dao;

import com.xu.blog_after_end.po.Blog;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
import org.springframework.data.jpa.repository.Modifying;
import org.springframework.data.jpa.repository.Query;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

public interface BlogRepository extends JpaRepository<Blog, Long> , JpaSpecificationExecutor<Blog> {
    @Query("select b from Blog b where b.recommend = true ")
    List<Blog> findTop(Pageable pageable);  // 推荐博客
    @Query("select b from Blog b where (b.title like ?1 or b.description like ?1)")
    Page<Blog> findByQuery(String query, Pageable pageable);    // 根据标题和描述查询博客
    @Transactional
    @Modifying
    @Query("update Blog b set b.views =b.views+1 where b.id=?1")
    int updateViews(Long id);   // 更新阅读数

    @Query("SELECT function('date_format', b.updateTime, '%Y') as year from Blog b group by function('date_format', b.updateTime, '%Y') order by function('date_format', b.updateTime, '%Y') desc")
    List<String> findGroupYear();
    @Query("select b from Blog b where function('date_format', b.updateTime, '%Y') = ?1")
    List<Blog> findByYear(String year);
    // 在现有的BlogRepository接口中添加以下方法
    @Query("SELECT SUM(b.views) FROM Blog b")
    Long sumViews();
}
